Fix annotations for older versions of Python

Author: kesmit13

requirements.txt

@@ -5,4 +5,5 @@ requests
 setuptools
 sqlparams
 tomli>=1.1.0; python_version < '3.11'
+typing_extensions<=4.13.2
 wheel

setup.cfg

@@ -25,6 +25,7 @@ install_requires =
     requests
     setuptools
     sqlparams
+    typing-extensions<=4.13.2
     wheel
     tomli>=1.1.0;python_version < '3.11'
 python_requires = >=3.8

singlestoredb/functions/typing.py

@@ -5,9 +5,11 @@
 
 try:
     from typing import TypeVarTuple
+    from typing import Unpack
 except ImportError:
     # Python 3.8 and earlier do not have TypeVarTuple
     from typing_extensions import TypeVarTuple  # type: ignore
+    from typing_extensions import Unpack  # type: ignore
 
 
 T = TypeVar('T', bound=Iterable[Any])  # Generic type for iterable types
@@ -32,8 +34,8 @@ def __new__(cls, *args: T) -> 'Masked[T]':
 Ts = TypeVarTuple('Ts')
 
 
-class Table(Tuple[*Ts]):
+class Table(Tuple[Unpack[Ts]]):
     """Return type for a table valued function."""
 
-    def __new__(cls, *args: *Ts) -> 'Table[*Ts]':
+    def __new__(cls, *args: Unpack[Ts]) -> 'Table[Unpack[Ts]]':
         return tuple.__new__(cls, args)  # type: ignore